Manusmriti

siva.sh/manusmriti/11/157

मासिकान्नं तु योऽश्नीयादसमावर्तको द्विजः । स त्रीण्यहान्युपवसेदेकाहं चोदके वसेत् ॥ १५७ ॥

sanskrit

If a twice-born man, who has not returned (home from his teacher’s house), eats food, given at a monthly (Sraddha,) he shall fast during three days and pass one day (standing) in water.

english translation

mAsikAnnaM tu yo'znIyAdasamAvartako dvijaH | sa trINyahAnyupavasedekAhaM codake vaset || 157 ||

hk transliteration by Sanscript